JPS5659560A - Production of resin coated sand - Google Patents

Production of resin coated sand

Info

Publication number
JPS5659560A
JPS5659560A JP13357379A JP13357379A JPS5659560A JP S5659560 A JPS5659560 A JP S5659560A JP 13357379 A JP13357379 A JP 13357379A JP 13357379 A JP13357379 A JP 13357379A JP S5659560 A JPS5659560 A JP S5659560A
Authority
JP
Japan
Prior art keywords
resin
sand
crosslinking agent
unsaturated polyester
uncured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13357379A
Other languages
Japanese (ja)
Other versions
JPS5927671B2 (en
Inventor
Hiroe Okawa
Akira Oyamada
Arata Fujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP54133573A priority Critical patent/JPS5927671B2/en
Publication of JPS5659560A publication Critical patent/JPS5659560A/en
Publication of JPS5927671B2 publication Critical patent/JPS5927671B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To produce the resin coated sand of superior collapsing property after pouring without producing any malodor at the firing of a molded mold by coating the surfaces of molding sand by means of specific uncured unsaturated polyester resin and adding a silane coupling agent, a polymerizing catalyst and a crosslinking agent separately at the kneading.
CONSTITUTION: An uncured unsaturated polyester resin such as crystalline unsaturated polyester which is solid at an ordinary temp., has no tack, is ≥60°C in softening point and ≤500 poise in viscosity and molding sand having been heated to 170°C are kneaded in a mixer. Here, it is wall to beforehand add a small amount of a liquid crosslinking agent. In this way, the unsaturated polyseter resin is coated on the surfaces of the sand by a hot melt method. After the coating or during kneading, 5W50parts mixture containing 0.1W5parts sliane coupling agent, 0.1W5 parts polymerizing catalyst benzoylperoxide and a liquid crosslinking agent such as chrolomethylene-di-allyl phthalate plus the portion have beforehand been charged, is added to 100 parts uncured resin. The molding sand which does not produce any malodor at mold firing, and is superior in collapsing property at the knock-out is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP54133573A 1979-10-18 1979-10-18 Manufacturing method for resin-coated sand Expired JPS5927671B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54133573A JPS5927671B2 (en) 1979-10-18 1979-10-18 Manufacturing method for resin-coated sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54133573A JPS5927671B2 (en) 1979-10-18 1979-10-18 Manufacturing method for resin-coated sand

Publications (2)

Publication Number Publication Date
JPS5659560A true JPS5659560A (en) 1981-05-23
JPS5927671B2 JPS5927671B2 (en) 1984-07-07

Family

ID=15107961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54133573A Expired JPS5927671B2 (en) 1979-10-18 1979-10-18 Manufacturing method for resin-coated sand

Country Status (1)

Country Link
JP (1) JPS5927671B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123656A (en) * 1984-11-19 1986-06-11 Kanegafuchi Chem Ind Co Ltd Polyester-modified vinyl resin
EP0219645A2 (en) * 1985-08-22 1987-04-29 Kabushiki Kaisha Toyota Chuo Kenkyusho Molding material and mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104721A (en) * 1974-01-25 1975-08-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104721A (en) * 1974-01-25 1975-08-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123656A (en) * 1984-11-19 1986-06-11 Kanegafuchi Chem Ind Co Ltd Polyester-modified vinyl resin
JPH0623330B2 (en) * 1984-11-19 1994-03-30 鐘淵化学工業株式会社 Paint
EP0219645A2 (en) * 1985-08-22 1987-04-29 Kabushiki Kaisha Toyota Chuo Kenkyusho Molding material and mold

Also Published As

Publication number Publication date
JPS5927671B2 (en) 1984-07-07

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